Camille a



(No Model.)

v(). A. PAURE.

AUTOMATIC SWITCH FOR SECONDARY BATTERIES.

Patented May 8, 1888.

. w n 8 1 J1 Pd n 5 u'. PETERS, Fhnln-Lilhognplmr. Washington. a c.

UNITED, STATES PATENT OFFICE.

GAMlLLE A. FAURE, OF NEW YORK, N. Y., ASSIGNOR TO THE ELECTRICALACGUMULATOR COMPANY,'OF NEW YORK.

AUTOMATIC SWITCH F OR SECONDARY BATTERIES.

$PECIPICATION forming part of Letters Patent No. 382,599, dated May 8,1888.

Application filed November 16, 1887. Serial No. 255,309.

To aZZ whom it may concern.

Be it known that I, OAMILLE A. FAURE, a citizen of the Republic ofFrance, and a resident of New York, in the county of New York and Stateof New York, have invented certain new and useful Improvements inAutomatic Switches, of which the following is a specification, and forwhich I have obtained a Certificate of Addition to my French patent, No.145,931, dated November 9, 1881, said certificate bearing date January18, 1882.

My invention is an improvement in automatic regulators, and isespecially useful in that system of lighting which embraces a dynamodriven from a wheel or axle of a moving car, a secondary batterysupplied with electricity from the dynamo, and a series of electriclamps fed from either or both.

My object is to furnish a means for making and breaking the main circuitwhen the speed of the dynamo varies above or below a predeterminedlimit, and for regulating the electromotive force of the dynamo, so asto preserve its current substantially uniform.

I provide a mechanical device operated by the centrifugal force due tothe speed of rotation of the armature,which acts to make the maincircuit when the speed of rotation is sufficient to produce therequisite minimum electro-motive force and to break said circuitwhenever the speed falls below this point. The

said device also operates a switch-arm to introduce and withdrawresistance with respect to a separate circuit containing thefield-magnet coils of the dynamo, so that the dynamocurrent is renderedsubstantially uniform. This centrifugal regulator I place upon thearmature-shaft in such a position that the divergence due to variationsin centrifugal force is in a vertical plane; thus the evil effect due tothejolting of the car is compensated for. In case of the illustrationany given jolt or shock will produce a deflection of one of a pair ofgovernor-ballsin adirection to producea given effect; but the samejoltor shock will produce an equal and opposite effect upon the other ball,and the evil efi'eet is thus neutralized. I also provide twoblade-springs upon which the terminals of the divided main circuit arere-- (No model.) Patented in France November 9, 1881. No. 145,931.

spectively carried. These springs preserve the continuity of the circuitby moving together or in contact within a considerable range, the resultbeing that jolts, jars, and shocks to which the apparatus is subjectedon a railway are ineffectual to produce a rupture of the circuit.

I will now describe my invention by reference to the accompanyingdrawing.

0 is the floor of a car located upon trucks having wheels W and axles A.

G andfare gear-wheels and belt mechanically connecting the pulley uponthe armatore-shaft a of the dynamo D with. the axle A, operating todrive the dynamo.

B is a secondary battery having its termi- 6 nals electrically connectedwith the brushes of the dynamo. Main conductors l and 2 connect thelamps Z with the dynamo and battery.

3 is a derived circuit containing the'fieldcoils of the dynamo and aswitch, operat-' ing to connect or disconnect a series ofresistance-coils, r r, &c., with respect to said circuit. This switchconsists of a series of insulated contacts, an arm making contacttherewith pivoted at o, and a link, m, connecting 5 said arm to ablade-spring, s, fixed to a block of insulating material, I, to whichspring one terminal of the divided lead 1 is connected. Spring 8 is alsoconnected to block I and forms the other terminal of the dividedconductor 1.

c is a collar fixed to armature-shaft a.

M is a mechanical device operated by centrifugal force. There. is aT-shaped piece on the end of shaft a capable of a movement equivalent tolengthening shaft a. \Weights or balls b b are pivoted, as shown,in'such a manner that under the influence of centrifugal force they actin a vertical plane to'produce a movement of the T-piece '15. Theseweights 1) are so placed that thejolts and jars o incident to railroadtravel occur at right angles to the shaft upon which they are placed.

While the weights are in the position shown, thejolting due to theunevenness of the roadbed would not affect either. When they are in aposition between that shown and ninety degrees of rotation, a jolt orjar would affect them equally and oppositely, and the evil of device Mmoves S)ll]l .sinto contact 'ith springs and closes the main circuit.-When this occurs, the switcharm n is on the first insulated contact, asshown, there is no artificial resistance in the field-magnet circuit,and the dynamo is generating an electro-motive 'l'orce ell'ective tocharge battery 13 and raise lamps Z Z to incandesccnce. As speed ofrotation increases the device M forces spring 8 s farther along, movingthe switch arm 1) onto the second insulated contact, 0, and introducingthe smallest artificial resistance into the circuit 8. This reduces thefield-magnetism and the electro-motive force generated by the dynamo tothe normal point. If the speed still increases, the springs s and s arestill farther moved along, as is the switch-arm n, and a largerresistance, r, is introduced into the field-circuit 3. If the speeddecreases, the reverse of the described operation takes place and theelectro motive force is still preserved substantially uniform until thespeed of rotation drops below the point where the mininum effectiveclectro motive force of charge is produced, when the springs s andsseparate and disconnect the dynamo and battery.

iVhat I claim, and desire to secure by Letters Patent, is-

1. The combination of a car or vehicle, a dynamo-electric machine, asecondary battery in circuit therewith, a switch or circuit-closer inthe main circuit, and a mechanical device, arranged as described,controlled by centrifu gal force and operating in a vertical plane toclose said switch when the speed of rotation reaches a predeterminedpoint, whereby the effect of jars and jolts upon the switch is avoided.

2. The combination of a dynamo-electric machine having its field-coilsin a separate circuit, a switch or circuit-ehanger in said circuit, aswitch or circuit-changer in the main circuit, and a device operated bythe centrifugal force due to the speed of rotation controlling both saidswitches.

3. The combination of a dynamoelectric machine having its field-coils ina separate circuit, a switch or circuit-changer in said cir' cuit, aswitch or circuit-changer in the main circuit, and a mechanical devicefor automati- Cally controlling both switches.

Signed at New York, in the county of New York and State of New York this15th day of November, A. D. 1887.

GAMILLE A. FAURE.

Witnesses:

FREDERICK EDER, XVM. B. VANSIZE.

